#include <iostream> using namespace std; int main() { int *grid; int n; cin >>n; grid=new int[n]; for(int i=0; i<n; i++) cin>>grid[i]; bool state=grid[0]; for(int x=0; x<n; x++) { if(x!=0) state=!(grid[x]^state); for(int y=0; y<x; y++) { cout<<"0 "; } cout<<"("<<state<<") "; if(x+1<n) for(int i=x+1; i<n; i++) { cout<<grid[i]<<" "; } cout<<endl; } cout<<(!state?"YES":"NO")<<endl; return 0; }
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